EP2293278A3 - Light source device - Google Patents

Light source device Download PDF

Info

Publication number
EP2293278A3
EP2293278A3 EP10172731A EP10172731A EP2293278A3 EP 2293278 A3 EP2293278 A3 EP 2293278A3 EP 10172731 A EP10172731 A EP 10172731A EP 10172731 A EP10172731 A EP 10172731A EP 2293278 A3 EP2293278 A3 EP 2293278A3
Authority
EP
European Patent Office
Prior art keywords
thin films
conductive thin
flat plate
surface side
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10172731A
Other languages
German (de)
French (fr)
Other versions
EP2293278A2 (en
Inventor
Hiroshi Tanaka
Mitsuhisa Ohnishi
Akihisa Yamada
Takayoshi Tanaka
Manabu Onozaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of EP2293278A2 publication Critical patent/EP2293278A2/en
Publication of EP2293278A3 publication Critical patent/EP2293278A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)
  • Led Device Packages (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A light source device which is used as the backlight device and does not generate sound is provided. One or more flat substrates each having a light emitting element on its surface side are supported by a chassis having a conductive flat plate surface so that back surfaces of the substrates are opposed to the flat plate surface. The substrate comprises first wiring conductive thin films on a surface side of an insulation substrate, and one or more second radiating or wiring conductive thin films on a back surface side of the insulation substrate. Two terminals of the light emitting element are connected to the two adjacent first conductive thin films. A potential of at least one of the second conductive thin films is fixed to have a constant potential difference or preferably fixed to the same potential with respect to that of the flat plate surface of the chassis.
EP10172731A 2009-08-27 2010-08-13 Light source device Withdrawn EP2293278A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009197277A JP4910023B2 (en) 2009-08-27 2009-08-27 Light source device

Publications (2)

Publication Number Publication Date
EP2293278A2 EP2293278A2 (en) 2011-03-09
EP2293278A3 true EP2293278A3 (en) 2011-03-30

Family

ID=43242608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10172731A Withdrawn EP2293278A3 (en) 2009-08-27 2010-08-13 Light source device

Country Status (6)

Country Link
US (1) US8497638B2 (en)
EP (1) EP2293278A3 (en)
JP (1) JP4910023B2 (en)
KR (1) KR101199126B1 (en)
CN (1) CN102003640B (en)
TW (1) TWI412698B (en)

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KR20090015734A (en) * 2007-08-09 2009-02-12 엘지이노텍 주식회사 Lighting device
CN102971579B (en) * 2010-06-28 2015-02-04 松下液晶显示器株式会社 Liquid crystal display device and television receiver
WO2012128074A1 (en) * 2011-03-18 2012-09-27 シャープ株式会社 Illumination device, display device, and television reception device
KR101257407B1 (en) * 2011-04-08 2013-04-23 주식회사 알.에프.텍 Led lighting apparatus
US9490554B2 (en) * 2011-09-16 2016-11-08 Air Motion Systems, Inc. Assembly and interconnection method for high-power LED devices
SG189603A1 (en) * 2011-11-04 2013-05-31 Opulent Electronics Internat Pte Ltd System for driving a plurality of high powered led units
KR101282725B1 (en) * 2011-11-10 2013-07-05 교우세라 커넥터 프로덕츠 가부시키가이샤 Module for Mounting LED And LED Module
JP6035766B2 (en) * 2012-02-15 2016-11-30 三菱電機株式会社 LED lighting device
KR101992718B1 (en) * 2012-04-24 2019-06-26 삼성전자주식회사 Display apparatus
KR101390374B1 (en) * 2012-05-14 2014-04-29 남경 주식회사 Lighting equipment
KR101402650B1 (en) * 2012-06-18 2014-06-03 교우세라 커넥터 프로덕츠 가부시키가이샤 Module for mounting LED module and LED module having the same
CN102750911B (en) * 2012-07-10 2015-11-25 深圳市华星光电技术有限公司 A kind of LED backlight drive circuit, backlight module and liquid crystal indicator
JP5522643B2 (en) * 2012-07-13 2014-06-18 シャープ株式会社 Light emitting device
JP5907388B2 (en) * 2012-09-24 2016-04-26 東芝ライテック株式会社 Light emitting device and lighting device
TWI481008B (en) * 2012-11-22 2015-04-11 Lextar Electronics Corp Light-emitting device
US9482410B2 (en) 2012-12-11 2016-11-01 Samsung Electronics Co., Ltd. Light emitting module and surface lighting device having the same
KR101301719B1 (en) 2013-01-24 2013-09-10 주식회사 트루스타 Electrode module for led lamp
JP6136501B2 (en) * 2013-04-12 2017-05-31 船井電機株式会社 Display device
JP2014230033A (en) * 2013-05-21 2014-12-08 株式会社東芝 Circuit and television apparatus
US9318360B2 (en) * 2013-10-11 2016-04-19 Applied Materials, Inc. Linear high packing density for LED arrays
TWI601909B (en) * 2014-02-11 2017-10-11 晶元光電股份有限公司 Light-emitting device and method of making the same
US9653671B2 (en) 2014-02-13 2017-05-16 Infineon Technologies Ag Light emitting device and method for operating a plurality of light emitting arrangements
JP5687784B1 (en) * 2014-02-26 2015-03-18 アイリスオーヤマ株式会社 LED lighting device
CN103956359A (en) * 2014-05-19 2014-07-30 四川柏狮光电技术有限公司 Single-ended power supply all-around LED lamp filament and manufacturing method thereof
JP6811195B2 (en) * 2015-07-02 2021-01-13 ルミレッズ ホールディング ベーフェー LED lighting device
EP3346321B1 (en) 2015-09-01 2020-10-07 Panasonic Intellectual Property Management Co., Ltd. Video display device
WO2017038082A1 (en) 2015-09-01 2017-03-09 パナソニックＩｐマネジメント株式会社 Video display device
JP6596677B2 (en) * 2015-09-01 2019-10-30 パナソニックＩｐマネジメント株式会社 Video display device
WO2017038085A1 (en) 2015-09-01 2017-03-09 パナソニックＩｐマネジメント株式会社 Image display device
JP6634612B2 (en) 2015-09-01 2020-01-22 パナソニックＩｐマネジメント株式会社 Video display device
EP3346323B1 (en) 2015-09-01 2020-03-04 Panasonic Intellectual Property Management Co., Ltd. Image display device
CN105627122B (en) * 2016-03-30 2018-11-27 湖南粤港模科实业有限公司 It is a kind of directly using metal heat sink as the LED light source module of positive and negative electrode circuit
JP6384565B2 (en) * 2017-04-25 2018-09-05 船井電機株式会社 Display device
JP2019025009A (en) * 2017-07-31 2019-02-21 株式会社大一商会 Game machine
JP2019025010A (en) * 2017-07-31 2019-02-21 株式会社大一商会 Game machine
JP2019080688A (en) * 2017-10-30 2019-05-30 株式会社大一商会 Game machine
JP2019197610A (en) * 2018-05-07 2019-11-14 株式会社小糸製作所 Luminaire
JP7085264B2 (en) * 2018-08-08 2022-06-16 株式会社大一商会 Pachinko machine
CN111290171B (en) 2020-02-18 2023-04-11 京东方科技集团股份有限公司 Direct type backlight source, backlight module and display device
US11428987B2 (en) * 2020-05-22 2022-08-30 Apple Inc. Electronic device display with a backlight having light-emitting diodes and driver integrated circuits in an active area
CN114779531B (en) * 2022-05-23 2024-06-18 高创(苏州)电子有限公司 Backlight lamp strip adapter plate, backlight module and display device
US12085802B2 (en) * 2022-05-31 2024-09-10 Samsung Electronics Co., Ltd. Display apparatus and light source apparatus thereof

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JPH02205823A (en) * 1989-02-06 1990-08-15 Hitachi Ltd Liquid crystal display device
JP2003187984A (en) * 2001-12-21 2003-07-04 Seiko Precision Inc El element and electronic equipment having el element
US20090135331A1 (en) * 2007-11-22 2009-05-28 Sony Corporation Backlight device and liquid crystal display apparatus
US20090207125A1 (en) * 2008-02-18 2009-08-20 Samsung Electronics Co., Ltd. Backlight assembly, display device having the same and method for assembling the backlight assembly

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Also Published As

Publication number Publication date
CN102003640B (en) 2013-07-17
JP2011049069A (en) 2011-03-10
JP4910023B2 (en) 2012-04-04
US20110050111A1 (en) 2011-03-03
KR101199126B1 (en) 2012-11-09
EP2293278A2 (en) 2011-03-09
US8497638B2 (en) 2013-07-30
TWI412698B (en) 2013-10-21
TW201111688A (en) 2011-04-01
KR20110022545A (en) 2011-03-07
CN102003640A (en) 2011-04-06

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